EP 0954086 A2 19991103 - Linear motor and linear compressor
Title (en)
Linear motor and linear compressor
Title (de)
Linearmotor und linearer Kompressor
Title (fr)
Moteur linéaire et compresseur linéaire
Publication
Application
Priority
- JP 11835898 A 19980428
- JP 28622898 A 19981008
- JP 28626098 A 19981008
Abstract (en)
A linear motor comprising prismatic inner yokes each constructed in a manner that a large number of sheets each having a generally rectangular configuration and having a high magnetic permeability are piled up each other and outer yokes each constructed in a manner that a number of sheets each having a generally rectangular configuration and having a high magnetic permeability are piled up each other. Each of coils is wound around a central portion of three magnetic pole portions of the outer yoke to alternately establish different magnetic poles along a direction of an axis of the linear motor. A surface of the outer yoke, holding the magnetic pole portions, is disposed in an opposed relation to the inner yoke to define a predetermined gap therebetween so that the inner yoke and the outer yoke form each of a plurality of yoke blocks. The yoke blocks are placed around the axis so that the sheet piling-up direction is perpendicular to a diametrical direction of a shaft. In addition, a moving element having a pair of permanent magnets magnetized radially so that their magnetizing directions are opposite to each other is movably located between the inner yoke and the outer yoke at a predetermined interval along the axis. This construction improves the motor efficiency and facilitates the manufacturing of the motor. <IMAGE>
IPC 1-7
IPC 8 full level
H02K 33/16 (2006.01)
CPC (source: EP KR US)
H02K 33/16 (2013.01 - EP US); H02K 41/02 (2013.01 - KR)
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
EP 0954086 A2 19991103; EP 0954086 A3 20001227; EP 0954086 B1 20030514; CN 1136646 C 20040128; CN 1233878 A 19991103; DE 69907801 D1 20030618; DE 69907801 T2 20040311; KR 100295178 B1 20010907; KR 19990082697 A 19991125; SG 71908 A1 20000418; US 6184597 B1 20010206
DOCDB simple family (application)
EP 99102230 A 19990204; CN 99101780 A 19990205; DE 69907801 T 19990204; KR 19990003762 A 19990204; SG 1999000483 A 19990205; US 24540899 A 19990205